:root {
    --primary: #2980FE;
    --primary-soft: #EAF3FF;
    --primary-light: #F5F9FF;
    --white: #ffffff;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E5EAF1;
    --gray-500: #65758B;
    --gray-700: #2F3A4A;
    --gray-900: #111827;
    --radius-lg: 24px;
    --radius-md: 18px;
    --shadow-soft: 0 18px 45px rgba(31, 63, 110, 0.08);
    --shadow-card: 0 12px 30px rgba(41, 128, 254, 0.10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
    color: var(--gray-700);
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FAFF 46%, #FFFFFF 100%);
    line-height: 1.75;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(100% - 32px, 1180px); margin: 0 auto; }
.content-container { width: min(100% - 32px, 920px); margin: 0 auto; }
.section { padding: 56px 0; }
.section-soft { background: var(--primary-light); }
.section-head { max-width: 760px; margin: 0 auto 28px; text-align: center; }
.section-head.align-left { text-align: left; margin-left: 0; }
.eyebrow, .category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    background: var(--primary-soft);
    border: 1px solid rgba(41,128,254,.14);
    padding: 6px 12px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 14px;
}
h1, h2, h3 { color: var(--gray-900); line-height: 1.22; margin: 0 0 14px; }
h1 { font-size: clamp(34px, 7vw, 62px); letter-spacing: -1.4px; }
h2 { font-size: clamp(26px, 4vw, 42px); letter-spacing: -0.7px; }
h3 { font-size: 21px; }
p { margin: 0 0 16px; }
.lead { color: var(--gray-500); font-size: 18px; }
.small { color: var(--gray-500); font-size: 14px; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255,255,255,.86);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--gray-200);
}
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.logo, .footer-logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 850; color: var(--gray-900); }
.logo img, .footer-logo img { width: 36px; height: 36px; border-radius: 12px; object-fit: cover; }
.main-nav { display: none; width: 100%; flex-direction: column; padding: 12px 0 18px; }
.main-nav.is-open { display: flex; }
.main-nav a { padding: 10px 0; color: var(--gray-500); font-weight: 650; border-bottom: 1px solid var(--gray-100); }
.main-nav a:hover { color: var(--primary); }
.nav-toggle { width: 44px; height: 44px; border: 1px solid var(--gray-200); background: var(--white); border-radius: 14px; display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; padding: 0 12px; }
.nav-toggle span { height: 2px; background: var(--gray-900); border-radius: 9px; }
.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 24px;
    border-radius: 999px;
    background: var(--primary);
    color: var(--white);
    font-weight: 800;
    box-shadow: 0 14px 30px rgba(41,128,254,.22);
    transition: transform .18s ease, box-shadow .18s ease;
    border: none;
}
.download-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 42px rgba(41,128,254,.28); }

.app-hero {
    position: relative;
    overflow: hidden;
    padding: 54px 0 34px;
    background:
      radial-gradient(circle at 80% 10%, rgba(41,128,254,.16), transparent 32%),
      linear-gradient(180deg, #fff 0%, #F5F9FF 100%);
}
.hero-grid { display: grid; gap: 34px; align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin: 26px 0 18px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.hero-tags span { background: var(--white); border: 1px solid var(--gray-200); color: var(--gray-500); padding: 8px 12px; border-radius: 999px; font-size: 14px; }
.app-visual { position: relative; min-height: 360px; display: grid; place-items: center; }
.phone-shell {
    width: min(75vw, 340px);
    border-radius: 34px;
    padding: 12px;
    background: linear-gradient(145deg, #FFFFFF, #EAF3FF);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(41,128,254,.10);
}
.phone-shell img { border-radius: 26px; width: 100%; background: var(--white); }
.floating-card {
    background: rgba(255,255,255,.92);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-card);
    border-radius: 18px;
    padding: 14px;
    color: var(--gray-700);
    display: grid;
    gap: 2px;
}
.floating-card strong { color: var(--gray-900); }
.app-visual .floating-card { position: static; margin-top: 12px; width: 100%; }
.hero-float-list { width: 100%; display: grid; gap: 10px; }

.ability-bar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: -8px;
    position: relative;
    z-index: 3;
}
.ability-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 18px;
    box-shadow: 0 10px 26px rgba(17,24,39,.04);
}
.ability-item span { display: inline-block; width: 10px; height: 10px; background: var(--primary); border-radius: 99px; margin-bottom: 8px; }
.ability-item h3 { font-size: 18px; margin-bottom: 6px; }
.ability-item p { color: var(--gray-500); font-size: 14px; margin: 0; }

.feature-showcase { display: grid; grid-template-columns: 1fr; gap: 18px; }
.feature-card, .guide-card, .risk-card, .faq-item, .info-card, .category-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 22px;
    box-shadow: 0 12px 30px rgba(17,24,39,.04);
}
.feature-card { display: grid; gap: 16px; overflow: hidden; }
.feature-card img { border-radius: 20px; background: var(--primary-light); border: 1px solid var(--gray-100); }
.text-link { display: inline-flex; align-items: center; color: var(--primary); font-weight: 800; margin-top: 6px; }
.text-link::after { content: '→'; margin-left: 6px; }

.product-section, .wallet-panel, .cold-wallet-panel, .swap-panel, .dapp-panel {
    display: grid;
    gap: 26px;
    align-items: center;
    border-radius: 30px;
    padding: 24px;
    border: 1px solid var(--gray-200);
    background: var(--white);
    box-shadow: var(--shadow-soft);
}
.cold-wallet-panel { background: linear-gradient(135deg, #F5F9FF, #FFFFFF); }
.swap-panel { background: #FFFFFF; }
.dapp-panel { background: linear-gradient(135deg, #FFFFFF, #F4F8FF); }
.product-media { border-radius: 26px; background: var(--primary-light); padding: 16px; border: 1px solid rgba(41,128,254,.10); }
.product-media img { border-radius: 22px; margin: 0 auto; }
.check-list, .soft-list { display: grid; gap: 10px; margin: 18px 0; padding: 0; list-style: none; }
.check-list li, .soft-list li { position: relative; padding-left: 28px; color: var(--gray-700); }
.check-list li::before, .soft-list li::before {
    content: '';
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    position: absolute;
    left: 4px;
    top: 10px;
    box-shadow: 0 0 0 5px rgba(41,128,254,.10);
}
.panel-note { background: var(--primary-soft); border: 1px solid rgba(41,128,254,.15); border-radius: 18px; padding: 16px; color: var(--gray-700); }

.process-steps { display: grid; gap: 14px; counter-reset: step; }
.step-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: 20px; padding: 20px; position: relative; }
.step-card .num { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 14px; background: var(--primary); color: #fff; font-weight: 900; margin-bottom: 12px; }
.step-card p { color: var(--gray-500); }

.risk-grid, .category-grid, .ecosystem-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.risk-card { border-top: 4px solid var(--primary); }
.risk-card strong { display: block; color: var(--gray-900); margin-bottom: 6px; }
.risk-card em { display: block; color: var(--primary); font-style: normal; font-weight: 800; margin-top: 8px; }
.category-card { min-height: 170px; display: flex; flex-direction: column; justify-content: space-between; }
.category-card p, .guide-card p, .faq-item p { color: var(--gray-500); }

.faq-list { display: grid; gap: 14px; }
.faq-item h3 { margin-bottom: 8px; }
.cta-section {
    text-align: center;
    padding: 48px 22px;
    border-radius: 30px;
    background: linear-gradient(135deg, #EAF3FF, #FFFFFF);
    border: 1px solid rgba(41,128,254,.15);
    box-shadow: var(--shadow-soft);
}
.cta-section .download-btn { margin-top: 12px; }

.page-hero { padding: 50px 0 28px; background: linear-gradient(180deg, #FFFFFF, #F5F9FF); }
.page-hero .content-container { display: grid; gap: 16px; }
.article-layout { display: grid; gap: 24px; align-items: start; }
.article-body { background: var(--white); border: 1px solid var(--gray-200); border-radius: 28px; padding: 24px; box-shadow: var(--shadow-soft); }
.article-body h2 { margin-top: 28px; }
.article-sidebar { display: grid; gap: 14px; }
.info-card h3 { font-size: 18px; }
.info-card ul, .article-body ul, .article-body ol { margin: 12px 0 0; padding-left: 20px; }
.info-card li, .article-body li { margin-bottom: 8px; }
.article-download { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--gray-200); }
.download-steps { display: grid; gap: 14px; margin-top: 18px; }
.download-steps .step-card { box-shadow: none; }

.site-footer { background: #fff; border-top: 1px solid var(--gray-200); margin-top: 56px; padding: 44px 0 22px; }
.footer-grid { display: grid; gap: 28px; }
.footer-grid p { color: var(--gray-500); max-width: 380px; margin-top: 12px; }
.footer-grid h3 { font-size: 16px; margin-bottom: 10px; }
.footer-grid a:not(.footer-logo) { display: block; color: var(--gray-500); padding: 4px 0; }
.footer-grid a:hover { color: var(--primary); }
.footer-bottom { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--gray-200); color: var(--gray-500); font-size: 14px; display: flex; flex-direction: column; gap: 8px; }

@media (min-width: 640px) {
    .ability-bar { grid-template-columns: repeat(2, 1fr); }
    .feature-showcase, .risk-grid, .category-grid, .ecosystem-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); }
    .download-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
    .container { width: min(100% - 56px, 1180px); }
    .content-container { width: min(100% - 56px, 960px); }
    .nav-toggle { display: none; }
    .main-nav { display: flex; width: auto; flex-direction: row; align-items: center; gap: 20px; padding: 0; }
    .main-nav a { border-bottom: 0; padding: 8px 0; font-size: 15px; }
    .hero-grid { grid-template-columns: minmax(0, 1.03fr) minmax(420px, .97fr); gap: 48px; }
    .app-hero { padding: 84px 0 50px; }
    .app-visual { min-height: 520px; }
    .hero-float-list { position: absolute; inset: 0; pointer-events: none; }
    .app-visual .floating-card { position: absolute; width: 210px; margin: 0; }
    .app-visual .floating-card:nth-child(1) { top: 28px; left: 0; }
    .app-visual .floating-card:nth-child(2) { top: 92px; right: 0; }
    .app-visual .floating-card:nth-child(3) { bottom: 88px; left: 12px; }
    .app-visual .floating-card:nth-child(4) { bottom: 34px; right: 10px; }
    .ability-bar { grid-template-columns: repeat(5, 1fr); margin-top: -26px; }
    .feature-showcase { grid-template-columns: repeat(2, 1fr); }
    .feature-card { grid-template-columns: 1fr 180px; align-items: center; min-height: 245px; }
    .feature-card img { height: 180px; object-fit: cover; }
    .wallet-panel, .cold-wallet-panel, .swap-panel, .dapp-panel, .product-section { grid-template-columns: 1fr 1fr; padding: 38px; }
    .cold-wallet-panel .product-media, .dapp-panel .product-media { order: -1; }
    .process-steps { grid-template-columns: repeat(3, 1fr); }
    .risk-grid { grid-template-columns: repeat(4, 1fr); }
    .ecosystem-grid { grid-template-columns: repeat(4, 1fr); }
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .article-layout { grid-template-columns: minmax(0, 1fr) 300px; }
    .article-body { padding: 34px; }
    .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; }
    .footer-bottom { flex-direction: row; justify-content: space-between; align-items: center; }
}